roof
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Article · From start to launch
Solar Rooftop installation steps, from site survey until activation
Installation does not begin with lifting the panels onto the roof. But it starts with understanding the use of electricity and designing it to be safe. A simple view of the entire sequence can be found here.
Short answer
What do you have to do to install solar PV?
The general sequence is: view electric bill → survey roof and electrical system → design → agree scope of work → choose document path → install → test/inspect system → deliver and connect correctly. Systems that produce for their own use and systems that apply to sell excess electricity use different document procedures. Therefore, the objective must be determined before submitting the application.
before design
1. Collect electricity bills and usage patterns.
The installer should request bills from several months back. Don't just look at the months with the highest electricity bills. And you should ask what time the main appliances are turned on.
- Electricity bill past 6–12 months
- A time when people are home or businesses are open.
- High-powered appliances such as air conditioners, pumps, machines, and EV cars.
- Plan to add appliances in the future
Actual work site
2. Survey of the roof and electrical system.
Electrical system
Check the meter, main cabinet, circuit breaker, ground wire, lights, 1 phase/3 phase and inverter position.
Safety
Place a way up and attach points for fall protection equipment. Wiring route and a safe work area
Model and price
3. System design and quotation.
A good design should show panel location, system size, inverters, cable routes, shielding cabinets, connection points, and estimated yield. along with the assumptions used
| Document | Things to see |
|---|---|
| Panel layout | Number of panels, orientation, margins, and maintenance areas |
| Single Line Diagram | Electrical equipment, protection systems and connection points |
| quotation | Equipment model, scope of work, work not included and warranty |
| Production estimates | Electricity units per year, proportionate to personal use and calculation conditions |
Before starting work
4. Agree the contract and choose the document route.
When choosing a style There should be a contract or work order specifying the price, payment period, duration, scope, and responsibilities. and a clear guarantee Then select the steps to match the project.
Produce for own use, do not sell electricity.
Systems connected in parallel with the network must still apply for connection according to the electricity authority's regulations. and set up to prevent backpayments according to the approved conditions
Apply to sell excess electricity
You must apply for the power purchase project and contract according to the qualifications, quotas, purchase rates, and procedures announced at the time of submission.
Independent system
Off-Grid systems that are not connected parallel to the grid have a different context. But it must also be designed and installed in accordance with relevant laws and safety standards.
Terms and forms are changeable. Installers should always check the latest announcements from PEA, MEA and the Energy Regulatory Commission before submitting.
Installation date
5. Install structures, panels, and electrical equipment.
Install the bracket
Set the orientation and adhere to the appropriate structure. Check tightness and prevent water leaks.
Install the panel
Lift panels in a safe way, aligning, spacing, and fastening to specifications.
Wiring and installing the inverter
Separate DC/AC paths, protect cables from sunlight, water, and sharp metal. Equipped with cabinets and protective equipment.
Before opening
6. Test and inspect the system.
- Check voltage, polarity, continuity. and insulation of the cable
- Check the grounding system, breakers, and protective equipment.
- Test the operation when the power from the network goes out.
- Turn on the system and compare the production values with the lighting conditions.
- Inspect roof work, anchor points, warning signs, and neatness.
Documents and delivery
7–8. Connect, deliver, and teach.
Systems connected to the network must undergo a process in accordance with the requirements of the local electricity authority. When ready to deliver The owner should receive these things.
- System design and list of actually installed equipment
- Warranty document and serial number
- Test results and important event photos
- Monitor app account owned by the system owner
- How to turn off the system in an emergency and channels to report problems
- System inspection and cleaning plan
Time matters
How many days does it all take?
Surveying, design, and installation can be completed in a matter of days to weeks depending on the size and difficulty. As for document consideration, inspection appointments, and connection, it depends on the type of request. completeness of documents and the agency's queue Therefore, you should not guarantee the opening date before checking the actual conditions.
Ready to start with the right survey?
Submit an electricity bill and make an appointment to survey the site with the PTH GREEN team to design a system suitable for actual use.
Read more: How to choose an installer? · Can I sell excess electricity?